Furnace-tap



FURNACE TAP.

lip. 515,244. Patentedvf'eb. 20, 1894.

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EDWARD PAYSON MATHEVSON, OF PUEBLO, COLORADO.

FU RNACE-TAP.

SPECIFICATION forming part of Letters Patent No. 515,244, dated February20, 1894.

Application led June 2l, 1893.

To @ZZ whom it may concern:

Beit known that I, EDWARD PAYsoN MATH- EWSON, of Pueblo, in the countyof Pueblo and State of Colorado, have invented certain new and usefulImprovements in Furnace- Taps, of which the following is a full, clear,and exact description.

The invention relates to furnace taps, such as shown and described inthe application for Letters Patent of the United States, Serial No.451,512, filed by me November 10, 1892, and allowed January 25, 1893.

The object of the invention is to provide certain new and usefulimprovements in furnace taps, whereby the operator in charge ispermitted to drive an agitating bar into the molten metal contained inthe hearth or crucible of the furnace, without stopping the blast orotherwise interfering with the regular process of smelting. y

The invention consists of certain parts and details, and combinations ofthe same, as will be hereinafter described and then pointed out in theclaims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figurel isa front elevation of the improvement as applied. Fig. 2 is across section of the same; and Fig. 3 is a plan view of the slagdischarge casing.

The furnace on which the improvement is applied is of the usualconstruction and is provided with the hearth or crucibleA on which ismounted a bosh B formed of a series of Water-cooled sections C and withthe tuyere openings D, as plainly shown in Fig. 2.

On the front of the furnace is arranged a casin g E formed with a mattehole E adapted to discharge the matte into the trough F eX- tending onthe outside of the furnace, as illustrated in the said Fig. 2, so as tocarry or guide the matte to a suitable receptacle or channel. Above thematte hole E is a slag hole Ez through which passes the slag into thecasing G formed integral with and arranged on the front of the casing Eabove the trough F, the said casing Gbeing formed with an inclinedbottom or front plate Hbolted to the sides of the casing G as plainlyshown Serial No. 478.334. (No model.)

in Figs. 1 and 2. Such inclination ofthe bottom H, not only reduces thecubical capacity of the casing as much as practicable, but also allowsdue freedom of access to the matte hole, E', and trough, F. On the frontplate H and at the upper and lower ends are arranged openings H and H2usually closed or lled with cold slag or clay, adapted to be easilybroken by a bar or other suitable tool, which may be driven through suchopenings, or notches, and the slag hole, E2, into the molten metal onthe furnace hearth. The bar is however most advantageously used at thetop of the casing, which is open for that purpose. On the sides of thecasing G are arranged vertically disposed guideways G' adapted tosupport the slag discharge spouts J registering at. their upper innerends with the notches or recesses formedin the sides of the casing G.The slag discharge spouts J discharge the slag to the sides of thefurnace and are vertically-adjustable in the guideways G. The adjustmentis effected by hand, and the spouts are held or supported at any desiredheight by means of props resting on abutments or ledges of the casing.It will be seen that by this arrangement the operator can, at any time,conveniently drive the bar into the molten metal contained in thecrucible of the furnace, without stopping the blast or interfering inany manner with the regular process of smelting.

It is understood that the slag passing through the hole E2 rises in thecasing G to be finally discharged through the openings G2 into thespouts J to be carried to one or both sides of the furnace.

The front plate H may have a water cooled pipe cast as indicated by fulland dotted lines in Figs. 1 and 2, a pipe, a, is cast in the casing toprovide for circulation of water for cooling the casing. The latter isattached to the furnace front, and its sides and bottom are alsoconnected by means of perforated lugs, b, and bolts, b', which passthrough the latter, as shown. v

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The combination with a furnace having aslag-discharge hole above the matte hole, of

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a slag-discharge casing which is attached to the furnace exteriorly andwhose bottom joins the furnace front at a point between the matte andslag holes, as shown and described.

2. The combination, with a furnace of the character described, the samehaving a slag hole above the matte hole, of a casing attached to thefurnace front and covering the slag but not the matte hole, and havingits top open to allow introduction of a bar through the slag hole, asshown and described.

3. The combination with the furnace of the character described, of thedetachable slagdischarge casing composed of side walls and anupwardly-inclined front plate which is detachably connected with saidside walls, as shown and described.

4C. The combination with the furnace having a slag hole above thematte-discharge hole, of a casing which is attached to the furnace, itsfront or bottom joining the furnace front at a point between the matteand slag holes, and being thence inclined upward, as shown anddescribed, for the purpose specilied.

5. A furnace tap comprising a casing fastened to the front of thefurnace and provided with a matte hole and a slag discharge hole, a slagcasingarran ged over the said mattehole in front of the first namedcasing, and slag spouts arranged on the sides of the said slag casing,and adapted for Vertical adjustment in guideways substantially as shownand described.

EDWARD PAYSON MATHEWSON.

Witnesses:

WM. H. SPEAIGHT, W. H. HOWARD.

